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Nexperia USA Inc. BZX84W-C22-QF
- Part No.:
- BZX84W-C22-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C22-QF.pdf
- Description:
- DIODE ZENER 22.05V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:6,593
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Product details
Overview
BZX84W-C22-QF from Nexperia is a ±5% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 22 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and qualified to AEC-Q101 for automotive use. It provides stable voltage reference and overvoltage protection in compact high-frequency power supply rails and ESD-critical sensor interfaces.
For engineers reviewing the BZX84W-C22-QF datasheet, BZX84W-C22-QF pinout, BZX84W-C22-QF application, or BZX84W-C22-QF equivalent, this page delivers verified Zener parameters, automotive-grade thermal and surge ratings, SC-70 terminal mapping, and validated alternatives for 22 V regulation in space-constrained PCBs.
Technical Context
This device operates as a reverse-biased silicon Zener diode with a nominal 22 V breakdown voltage (VZ) at IZ = 5 mA, differential resistance of 250 Ω max, and positive temperature coefficient of +18.4 mV/K. Its low 1.25 pF capacitance at 1 MHz enables stable performance in high-frequency feedback loops.
Designed for surface-mount reliability, it features a non-connected (n.c.) center terminal, anode/cathode configuration optimized for minimal parasitic inductance, and junction-to-ambient thermal resistance of 455 K/W on standard FR4 PCB - enabling operation up to 150 °C junction temperature under defined mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.8 V to 23.3 V at IZ = 5 mA - defines precise regulation window for 22 V reference circuits |
| Tolerance | ±5% - ensures predictable clamping threshold across production lots without binning |
| Differential Resistance (rdiff) | ≤250 Ω at IZ = 5 mA - limits output voltage shift under load current variation |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 - sets maximum continuous DC/low-frequency power handling |
| Reverse Current (IR) | ≤50 nA at VR = 15.4 V - guarantees low leakage below regulation threshold |
| Diode Capacitance (Cd) | 1.25 pF at f = 1 MHz, VR = 0 V - supports noise-sensitive analog and RF bias networks |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs - enables transient overvoltage suppression in automotive load-dump events |
Pinout & Package
Package: SOT323 (SC-70), 3-terminal leadless surface-mount plastic package with 0.65 mm pitch; dimensions per IEC JEDEC outline (Lp = 2.2 mm, E = 1.35 mm, D = 1.8 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward conduction path; connected to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internally isolated metal pad - must remain unconnected to avoid parasitic coupling or solder bridging |
| 3 | Cathode (K) | Zener breakdown terminal; connected to higher-potential node and primary regulation reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and infotainment systems requiring extended temperature (-55 °C to +150 °C) and mechanical stress reliability |
| Low dynamic capacitance | 1.25 pF enables minimal signal distortion in high-speed voltage clamp and RF detector applications |
| Center-terminal isolation | Pin 2 (n.c.) eliminates internal bond-wire inductance and improves high-frequency impedance stability |
| Wide Zener range coverage | Part of 74-type series spanning 2.4 V–75 V - simplifies BOM consolidation for multi-rail designs |
| Pulse surge capability | 40 W non-repetitive peak power withstand supports ISO 7637-2 pulse 5a/b compliance in 12 V vehicle systems |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver supply rail during load dump events. IC Role / Device Role / Timing Role: Zener shunt regulator providing overvoltage protection for 5 V LDO input stage. Use Value: Limits transient excursions to ≤24 V using 22 V breakdown, preventing LDO damage while maintaining <50 nA leakage at nominal 12 V operation. |
Use Scenario: Precision reference for 4–20 mA loop transmitter DAC output stage. IC Role / Device Role / Timing Role: Stable 22 V Zener reference establishing current-sense amplifier headroom. Use Value: ±5% tolerance and +18.4 mV/K TC ensure <0.5% full-scale error drift over –40 °C to +85 °C ambient range. |
| Consumer Audio Power Sequencing | Medical Patient Monitor Analog Front-End |
Use Scenario: Soft-start voltage threshold detection for Class-D amplifier enable logic. IC Role / Device Role / Timing Role: Zener-based comparator reference setting turn-on delay timing via RC network. Use Value: 250 Ω rdiff ensures consistent trip point across varying supply loads, reducing sequencing jitter by >15% vs. resistor-divider references. |
Use Scenario: Overvoltage guardrail for ECG electrode bias circuit powered from isolated DC-DC converter. IC Role / Device Role / Timing Role: Fail-safe shunt limiter protecting instrumentation amplifier inputs from >25 V faults. Use Value: 1.25 pF capacitance prevents high-frequency noise injection into µV-level biopotential signals, preserving SNR >95 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C22-Q | Same electrical specs and SOT323 package; differs only in marking code (S4% vs QF) and traceability documentation level | No functional difference; Q variant includes enhanced lot traceability for Tier-1 automotive customers | Select QF for general industrial/commercial use; choose Q when full AEC-Q101 audit trail is contractually required |
| MMSZ5247B-TP | 22 V ±5%, but in SOD-123 package (larger footprint, 350 mW Ptot, 500 Ω rdiff) | Higher power margin but 100% larger board area; unsuitable for ultra-dense layouts | Use only if thermal derating above 275 mW is needed and PCB real estate permits SOD-123 placement |
Compared with BZX84W-C22-QF, the Q variant offers identical regulation performance with added traceability for OEM audits, while MMSZ5247B-TP trades size efficiency for higher power handling - making BZX84W-C22-QF optimal for space-constrained automotive and portable medical designs requiring AEC-Q101 compliance.
Availability
BZX84W-C22-QF is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, consumer audio sequencers, and medical patient monitor front-ends requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX84W-C22-QF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh-environment automotive and industrial power management systems.
FAQ
What is the maximum continuous forward current rating for BZX84W-C22-QF?
The device is not rated for continuous forward conduction; its absolute maximum forward current is 200 mA per limiting values table, but forward operation is non-standard. It is designed exclusively for reverse-bias Zener regulation, with VF ≤ 0.9 V at IF = 10 mA - intended only for brief test or fault-condition scenarios.
Can BZX84W-C22-QF be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, causing current hogging and thermal runaway. The BZX84W-C22-QF's +18.4 mV/K coefficient does not guarantee matched tracking; parallel use is prohibited without external ballasting resistors and derating per Nexperia's application guidance.
Is the n.c. pin (Pin 2) electrically isolated or thermally coupled to the die?
Pin 2 is fully electrically isolated - no internal connection to anode, cathode, or substrate. However, as a metal pad in the SOT323 mold compound, it provides minor thermal conduction path; Nexperia's thermal characterization assumes Pin 2 is left floating and un-soldered per standard footprint guidelines.
How does the 22 V Zener voltage shift over temperature in actual circuit operation?
At IZ = 5 mA, the temperature coefficient is +18.4 mV/K - meaning VZ increases by ~1.84 V from –40 °C to +125 °C ambient. This shift is linear and repeatable; design margins must accommodate the full 20.8 V to 23.3 V range across the operating junction temperature span.
BZX84W-C22-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22.05 V
- Tolerance:
- ±5.67%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.435 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C22-QF FAQ
1.How can I place an order for BZX84W-C22-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C22-QF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZX84W-C22-QF reliable?
The price and inventory of BZX84W-C22-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C22-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C22-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C22-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C22-QF?
BZX84W-C22-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C22-QF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZX84W-C22-QF?
For technical support, including BZX84W-C22-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C22-QF requirements.
6.How does Aetrix verify that BZX84W-C22-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C22-QF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZX84W-C22-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C22-QF?
All BZX84W-C22-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C22-QF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZX84W-C22-QF part is unused and in its original packaging.
Return procedure for BZX84W-C22-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C22-QF Tags
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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